Fair Value Measurements - Fair Value Inputs of Long-Lived Assets Held and Used (Details)
|
9 Months Ended |
12 Months Ended |
|
Sep. 30, 2016
ft²
$ / ft²
|
Dec. 31, 2015
ft²
$ / ft²
|
| Retail |
|
|
| Impaired Long-Lived Assets Held and Used [Line Items] |
|
|
| Property square footage | ft² |
91,817
|
153,008
|
| Retail | Minimum |
|
|
| Impaired Long-Lived Assets Held and Used [Line Items] |
|
|
| Sales price (in usd per sqft) |
62.84
|
41.21
|
| Retail | Maximum |
|
|
| Impaired Long-Lived Assets Held and Used [Line Items] |
|
|
| Sales price (in usd per sqft) |
214.29
|
168.30
|
| Retail | Weighted Average |
|
|
| Impaired Long-Lived Assets Held and Used [Line Items] |
|
|
| Sales price (in usd per sqft) |
110.54
|
79.90
|
| Industrial |
|
|
| Impaired Long-Lived Assets Held and Used [Line Items] |
|
|
| Property square footage | ft² |
160,477
|
375,076
|
| Industrial | Minimum |
|
|
| Impaired Long-Lived Assets Held and Used [Line Items] |
|
|
| Sales price (in usd per sqft) |
2.50
|
17.77
|
| Industrial | Maximum |
|
|
| Impaired Long-Lived Assets Held and Used [Line Items] |
|
|
| Sales price (in usd per sqft) |
38.15
|
22.00
|
| Industrial | Weighted Average |
|
|
| Impaired Long-Lived Assets Held and Used [Line Items] |
|
|
| Sales price (in usd per sqft) |
21.59
|
19.40
|
| Office |
|
|
| Impaired Long-Lived Assets Held and Used [Line Items] |
|
|
| Property square footage | ft² |
|
204,936
|
| Office | Minimum |
|
|
| Impaired Long-Lived Assets Held and Used [Line Items] |
|
|
| Sales price (in usd per sqft) |
|
58.17
|
| Office | Maximum |
|
|
| Impaired Long-Lived Assets Held and Used [Line Items] |
|
|
| Sales price (in usd per sqft) |
|
133.61
|
| Office | Weighted Average |
|
|
| Impaired Long-Lived Assets Held and Used [Line Items] |
|
|
| Sales price (in usd per sqft) |
|
104.53
|